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Title: Low Temperature Behavior of the Heavy Fermion Ce 3Co 4Sn 13

Authors:
 [1];  [2];  [3];  [3];  [4];  [5];  [6]
  1. ORNL
  2. Indiana University
  3. National Institute of Standards and Technology (NIST)
  4. University of Delaware
  5. Los Alamos National Laboratory (LANL)
  6. University of California, Irvine
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); High Flux Isotope Reactor
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
943523
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Magnetism and Magnetic Materials; Journal Volume: 310
Country of Publication:
United States
Language:
English

Citation Formats

Christianson, Andrew D, Gardner, J. S., Kang, H. J., Chung, J.-H., Bobev, S., Sarrao, J. L., and Lawrence, J. M. Low Temperature Behavior of the Heavy Fermion Ce3Co4Sn13. United States: N. p., 2007. Web. doi:10.1016/j.jmmm.2006.10.040.
Christianson, Andrew D, Gardner, J. S., Kang, H. J., Chung, J.-H., Bobev, S., Sarrao, J. L., & Lawrence, J. M. Low Temperature Behavior of the Heavy Fermion Ce3Co4Sn13. United States. doi:10.1016/j.jmmm.2006.10.040.
Christianson, Andrew D, Gardner, J. S., Kang, H. J., Chung, J.-H., Bobev, S., Sarrao, J. L., and Lawrence, J. M. Mon . "Low Temperature Behavior of the Heavy Fermion Ce3Co4Sn13". United States. doi:10.1016/j.jmmm.2006.10.040.
@article{osti_943523,
title = {Low Temperature Behavior of the Heavy Fermion Ce3Co4Sn13},
author = {Christianson, Andrew D and Gardner, J. S. and Kang, H. J. and Chung, J.-H. and Bobev, S. and Sarrao, J. L. and Lawrence, J. M.},
abstractNote = {},
doi = {10.1016/j.jmmm.2006.10.040},
journal = {Journal of Magnetism and Magnetic Materials},
number = ,
volume = 310,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
  • The specific heat of Ce3Co4Sn13 exhibits a crossover from heavy Fermion behavior with antiferromagnetic correlations at low field to single impurity Kondo behavior above 2 T. We have performed neutron diffraction measurements in magnetic fields up to 6 Tesla on single crystal samples. The (001) position shows a dramatic increase in intensity in field which appears to arise from static polarization of the 4f level and which at 0.14 K also exhibits an anomaly near 2T reflecting the crossover to single impurity behavior.
  • The non-magnetic heavy fermion compound Ce{sub 3}Co{sub 4}Sn{sub 13} was studied under pressure. We report single crystalline measurements of electrical resistivity as a function of temperature ρ(T) under pressure. Some characteristic features related to a structural transition (T{sub S}), crystalline field effects (T{sub CEF}), and a low temperature maximum (T{sub max}), possibly connected simultaneously to the onset of Kondo lattice coherence and short range magnetic correlations, were identified in the ρ(T) data. A pressure-temperature phase diagram with T{sub S} and T{sub max} was constructed by mapping these features. Like for most Ce-based heavy fermion compounds, T{sub max} moves to highermore » temperatures with pressure, indicating that it is related to the Kondo energy scale, due to the increase of hybridization induced by pressure. On the other hand, T{sub S}, associated to a superlattice distortion and probably combined with a charge density wave transition, decreases as a function of pressure. However, differently from the Sr{sub 3−x}Ca{sub x}Ir{sub 4}Sn{sub 13} system, where a superlattice quantum phase transition is observed [L. E. Klintberg et al., Phys. Rev. Lett. 109, 237 008 (2012)], in Ce{sub 3}Co{sub 4}Sn{sub 13} T{sub S} ∼ 154 K, at ambient pressure (P = 0), seems to stabilize at around 143 K for P ≥ 19 kilobars. We also investigated ρ(T) in external magnetic fields, at P = 0. Negative magnetoresistance and increase of T{sub max} are observed, suggesting suppression of low temperature short range magnetic correlations.« less
  • Two different samples of the Ce-Ru-Ge ternary system of nearly the same composition, Ce{sub 3}Ru{sub 4}Ge{sub 13} and CeRuGe{sub 3}, have been studied, as well as the compound Y{sub 3}Co{sub 4}Ge{sub 13}, which contained a nonmagnetic rare earth as the reference material. Combined x-ray and neutron-diffraction studies of CeRuGe{sub 3} and an x-ray study of Ce{sub 3}Ru{sub 4}Ge{sub 13} show that we are dealing with internally distorted (probably 3D modulated) crystals with variable composition, i.e., Ce{sub 4{minus}{ital x}}Ru{sub 4}Ge{sub 12+{ital x}} and ranging from at least {ital x}=0 (1:1:3) to {ital x}=1 (3:4:13). We have measured the dc magnetic susceptibility,more » the ac susceptibility, the zero-magnetic-field heat capacity, the magnetic heat capacity in fields ranging from 0 to 9.85 T, and the electrical resistivity. The paramagnetic susceptibility and x-ray crystallography data indicate that the Ce{sub 4{minus}{ital x}}Ru{sub 4}Ge{sub 12+{ital x}} alloys cotain both trivalent cerium and tetravalent cerium in a 1 to 3 ratio. As far as we are aware, this is the first time such a valence situation has been reported for a cerium compound. In addition, the heat-capacity results show that Ce{sub 4{minus}{ital x}}Ru{sub 4}Ge{sub 12+{ital x}} is a heavy fermion with {gamma} varying from 428 to 592 mJ/mol Ce{sup 3+}K{sup 2} at the 1:1:3 and 3:4:13 compositions, respectively. Zero-field and magnetic-field heat capacity, and ac magnetic susceptibility data suggest that CeRuGe{sub 3} is a spin-glass system below {similar_to}5 K, which is consistent with the specific features of its crystal structure. Y{sub 3}Co{sub 4}Ge{sub 13} displays normal metallic behavior.« less
  • Cited by 16
  • We have measured the resistivity {rho}({ital T}) and susceptibility {chi}({ital T}) of Ce{sub 3}Al, Ce{sub 3}In, and Ce{sub 3}Sn in the temperature range 1--350 K, the specific heat {ital C}({ital T}) for 1--25 K and the pressure dependence of the resistivity {rho}({ital P},{ital T}) for 0{lt}{ital P}{lt}16 kbar and 1{lt}{ital T}{lt}300 K. These are heavy-fermion systems that show no superconductivity above 0.4 K. In the ground state the linear coefficients of the specific heat {gamma} are 0.70 and 0.26 J/mol Ce K{sup 2} for Ce{sub 3}In and Ce{sub 3}Sn, respectively. The magnetic specific heat of Ce{sub 3}In shows two separatedmore » maxima: one at 4.3 K due to the heavy fermions and a second Schottky peak at 23 K arising from a {Gamma}{sub 7}-{Gamma}{sub 8} crystal-field splitting of order {ital T}{sub CF}=65 K. For Ce{sub 3}Sn the crystal-field splitting is comparable. From {chi}(0) we obtain values of the Wilson ratio of 11.5 and 7.0 for Ce{sub 3}In and Ce{sub 3}Sn. We argue that these large values represent the presence of ferromagnetic correlations in the ground state.« less